I am an avid reader, and I go through a lot of books. Jellybeans has been there for me for years now as a way to turn my old books in and get great used books for free or little money. They have a great store credit system in place for turning in your gently used books, and then you can use your credit to buy anything in the store. It works great for me, for a lot of the time I want to keep my books and pass them on- so library books are tough!
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